一种基于壳单元的自动快速计算方法及其在结构设计中的应用

提出一种自动快速计算方法实现壳结构设计中多参数大规模问题的快速计算。该方法将参数域离散技术、显式参数化有限元技术和子空间构造技术通过自动快速计算流程联系起来，提高了快速计算方法的可操作性，改变了常规快速计算方法的流程。同时,通过误差控制实现对子空间的实时更新,在提高快速计算方法的精度的同时减少计算成本。该方法在车身结构...

An automatic and rapid computational method and its application in vehicle body design

An automatic and rapid computational method was suggested to predict the structural behavior of multi-parameterized and large-scale problems in structural design. Some isolate techniques, such as parameter domain discretization, explicit parametrized finite element method and subspace construction method, were connected by the automatic computational procedure to improve the feasibility of the method. The procedure of general rapid computational method was changed. Furthermore, the subspace constructed in the procedure was real-time updated according to the computational error. Meanwhile, the accuracy of the automatic computational method was improved and the cost of constructing the subspace is reduced. The method was applied to the stiffness evaluation of a vehicle body. It is found that the subspace derived from the automatic method is of higher accuracy with less computational efforts. The method is applicable to the multi-parameterized large-scale structural design and real-time design contexts.